IAI America SSPDACR - Manual (Page 38)

6. Installation
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Caution: (1) When installing the actuator vertically, make sure the motor comes to the top. When the
actuator is installed with the motor at the bottom, there shouldn’t be any problems
during normal operations. If the actuator is not operated for an extended period of time,
however, depending on the ambient environment (especially at high temperature)
grease may separate and base oil may flow into the motor unit, causing problems on
rare occasions.
(2) ISDB, ISPDB, ISDBCR and ISPDBCR actuators of S, L and M types can be installed
sideways or ceiling mount, but the actuators must be checked daily. If the actuator is
installed sideways or ceiling mount, the stainless sheet may be slacked or displaced. If
the actuator is used continuously while the stainless sheet is slacked or displaced, the
stainless sheet may break or other problems may occur. Check the actuator daily and if
the stainless sheet is found slacked or displaced, make installation adjustment of the
stainless sheet. [Refer to 13, “Replacement/Adjustment Procedure for Stainless
Sheet.”]